Whether nitrogen monoxide affect on iron metabolism in intestinal mucous membrane or not, the first pace of iron transport, should be researched deeply.

小肠黏膜上皮是机体铁转运的第一步，一氧化氮是否影响此处铁的转运有待于进一步分析。

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Heme oxygenase which is heme-degradation enzyme and rate-limiting enzyme can catalyzes the degradation of heme to carbon monoxide, catalytic iron and bilirubin.

血红素氧合酶是血红素降解的起始酶和限速酶，能代谢血红素形成一氧化碳、游离铁和胆红素。

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